diff --git a/mathgl.spec b/mathgl.spec
index 2963a53..ba10598 100644
--- a/mathgl.spec
+++ b/mathgl.spec
@@ -181,6 +181,7 @@ done
 %patch1 
 %patch2 
 %patch3 -p1
+%patch4 
 
 # Fix hardcoded paths
 sed -i s,/usr/local/share/doc/mathgl/,%{_docdir}/%{name}/, mgllab/main.cpp